What age are you now? You say the issue hasn’t gone away - when were you first aware of your tight foreskin? How long ago?
In terms of the sex what you need to realise is that millions of men throughout the ages have had issues like this and that has not stopped them having enjoyable sex lives and fathering children. Simply ensure you have the protection right and get on and enjoy having sex.
In terms of the foreskin itself, I wonder if you aware that you can stretch your foreskin to accommodate the way your penis has developed?
Stretching may take some time and take some concerted effort but eventually you will be able to develop sufficient elasticity and resilience in your foreskin so that you can expose the full head of your penis.
One approach would be to treat foreskin stretches something like a gym exercise - you start very easy and build on the successes over time.
Here is a really good explanation of the required stretches - use the following as Search terms and check it out:
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- Wiki - How - 3 Ways to do - Phimosis Stretching